During an interview with entertainment news program “Extra,” correspondent Jerry Penacoli thanked the president for his healthcare law, which he says “pretty much saved my finances and my life” during his battle with cancer. “The number of stories I have gotten like yours — it’s made a difference in a lot of people’s lives,” Obama said in the interview, which aired Thursday. But not all the feedback the president gets from the public is positive. “I get 10 letters a night out of the 40,000 letters and emails and messages that we get,” he said. “Some of them are just saying thank…